Set process priority to high on windows

Cargo.lock

@@ -1922,6 +1922,7 @@ dependencies = [
  "rubato",
  "thread-priority",
  "wgpu",
+ "windows 0.58.0",
  "winit",
 ]
 

Cargo.toml

@@ -23,6 +23,9 @@ thread-priority = "1"
 wgpu = "23.0"
 winit = "0.30"
 
+[target.'cfg(windows)'.dependencies]
+windows = { version = "0.58", features = ["Win32_System_Threading"] }
+
 [build-dependencies]
 cc = "1"
 

src/main.rs

@@ -19,7 +19,19 @@ struct Args {
     rom: Option<PathBuf>,
 }
 
+#[cfg(windows)]
+fn set_process_priority_to_high() -> Result<()> {
+    use windows::Win32::{Foundation, System::Threading};
+    let process = unsafe { Threading::GetCurrentProcess() };
+    unsafe { Threading::SetPriorityClass(process, Threading::HIGH_PRIORITY_CLASS)? };
+    unsafe { Foundation::CloseHandle(process)? };
+    Ok(())
+}
+
 fn main() -> Result<()> {
+    #[cfg(windows)]
+    set_process_priority_to_high()?;
+
     let args = Args::parse();
 
     let (mut builder, client) = EmulatorBuilder::new();